The T1ZU12 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.7 to 1.8 GHz, Average Power 5 W, Average Power Forward 5 W, Insertion Loss 0.35 dB, Isolation 22 dB. Tags: Drop-In, Drop-In Isolator. More details for T1ZU12 can be seen below.